Accession Number : AD0657172

Title :   EFFECT OF OFF-PATH IONOSPHERIC REFLECTIONS ON VLF RADIO WAVES.

Descriptive Note : Rept. for Jan 66-Apr 67,

Corporate Author : NAVY ELECTRONICS LAB SAN DIEGO CALIF

Personal Author(s) : Gossard,E. E. ; Paulson,M. R.

Report Date : 14 JUN 1967

Pagination or Media Count : 44

Abstract : Describes a technique for analyzing movements in the lower ionosphere. The technique uses a ground based very-low-frequency radio transmitting and receiving system. The experimental results show that off-path reflections in the irregular ionosphere are much more important than hitherto believed, and that movement of discrete reflectors in the ionosphere causes Doppler frequency shifts that have an important effect on the phase and amplitude fluctuations of reflected radio waves. (Author)

Descriptors :   (*IONOSPHERE, RADIO WAVES), (*RADIO WAVES, REFLECTION), WAVE PROPAGATION, VERY LOW FREQUENCY, LOW FREQUENCY, PHASE SHIFT CIRCUITS, ATTENUATION, DOPPLER EFFECT, ATMOSPHERIC MOTION

Subject Categories : Radiofrequency Wave Propagation
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE